Boiler-furnace.



D. VINES.

' BOILB RRRRRRR B. APPLIUATIQN FILED mms. 19o?.

`vide against the falling rarnirr OFFICE.

DAVID VIES, OF MECHANICSVILLE, NEW YORK.

BoiLEs-FURNACE.

Specification of Letters Patent.

Patented May 28, 1907.

Application animaron 8,1907. semi No. 361,352.

1'0 all w/wm, it Tft/ty concern:

Be it known that l, DAVID YiNns, a citizen of the United States, residing at Mechanicsville, inthe county of Saratoga and State of New York, have invented certain new and F useful Improvements in Boiler Furnaces; and I do hereby declare the following' to be a full, clear, and exact description of thcinven- ,i

tion, such as will enable others skilled in the art to which it appertains to make and use the sazne.

My invention relates to improvements in boiler-furnaces and particularly to the arches over the rear combustion chambers.

I'Ieretofore it has been thought impractical to support the arch simply on the side walls of the l'uriiaee for the reason that if the arch l were built with suiicient rise it would bring the central portion thereof so high that it would expose the end of the boiler above the water line. 1Various metallic devices have been employed to support the end'ofthe arch next to the boiler. The defect in these arches is that the metal support burns out and allows them to fall in.

lt is the ob ject of the present invention to provide a curved arch of fire brick supported solely upon the side walls of the furnace and so constructed that it may rise and still not expose the end of the boiler A above the water line.

A further object of my invention is to proout of asbestos or like material filled in between the end of the boiler and the adjacent end of the arch.

The invention consists in the features of construction and combinations of parts hereinafter described and specified in the claims.

In the accompanying drawings, illustrating the preferred embodiment of my invention: Figure l is a broken central longitudi nal vertical sectional view of a boiler furnace equipped with my arch. Fig. 2 is a cross sectional view on the line :awa: of Fig. Figs. 3 and 4 are detailed views of two modilied forms of plain bricks for the central portion of the arch, and Fig. 5 is a detailed view of another modified form of brick which is lcurved down at its rear end.

Referring more particularly to the drawings, 1 is the boiler, 2'thc bed, 3 the rear wall and 4 the side walls ofthe combustion chamber. The arch 5 is composed of a plurality ol' lire bricks 6. Said bricks may be tongue and grooved as illustrated in. Fig. 2 or they may be plain as shown in Figs. 3 to 5 .incluhave the required i sive. Each of the bricks making up the' cen- Q trai portion ci' the arch is thicker at the end l' adjacent to the boiler as shown at 7, in order to protect said boiler above the water line "1a-*m (see Fig. 2) and still allow suflicient risc to the arch to render it strong and duraa ble. lt will be noted that in my arch it is not l necessary to support the end thereof next to the boiler by any form of metallic device i which might burn out.

l The end faces of the bricks adjacent to the l boiler are inclined or beveled upwardly and away from the boiler as at e', and between l said faces and said boiler is placed a filling 9 cf soft material such as asbestos or the like which allows for expansion and contraction. Heretofore said end faces orsaid bricks have been made vertical but it has been found that; when so made, the filling material will soon drop out leaving an opening through which the flames may pass up against the yboiler above the waterline. By making the end faces of the bricks oblique, a V-shaped space or slot is left between said bricks and boiler into which the lling material may be packed or wedged so that it will not fall through.

In Figs. 3 and 4 I have'illustrated two modified forms of bricks 10 and 1l for building the ccntralportion of the arch.

In Fig. 5 still another style of brick 12 is shown which curves down' at the end farthest topped rear wall. r

It will be understood that any of the styles of bricks illustrated or any other suitable form may be employed without departing the central portion of said at the ends adjacent to the pose specified.

3. In a boiler-furnace,y thel combination, with the. boiler and the side walls of the comboiler for the purfrom the boiler so as to rest upon a straightV from the spirit or sacrificing the advantages ported on said side walls, the bricks formingarch being thicken curved arch walls, the end of said arell adjacent te the l rf 'l ees adjacent to t'ne boiler beveled upwardly,"

bustion chamber, of a laterally curved eelji l with the boiler and the Walls of the combussustalnmg brick arch supported on smal eide l non chenille/r, of en avi-eli composed of a pluiiy el' bricks, said bricks having their end boiler being thicker at the central portieri thereof for the purpose specified.

V4. In a boiler-furnace, the combination, with the boiler and the Walls of the combustion chamber, of an arch having its end edi er cent tothe Aboiler beveledv upwardly and' away from the boiler., forming e fsrmpefl slot to receive' filling material.

5. In a boiler-furnace, the Combination,

l and army freni the boiler `forming 'e Vehaped l Slot to receive L filling material. l In testimony whereof, I affix my signature,

in presence of two Witnesses.

| DAVID VINES.

lillitnesses l l JAMES R. SMITH, HOHER KLNsING. 

